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- W3100406078 endingPage "87" @default.
- W3100406078 startingPage "87" @default.
- W3100406078 abstract "Incomplete carbon-oxygen detonation with reactions terminating after burning of 12C in the leading 12C + 12C reaction (C-detonation) may occur in the low density outer layers of white dwarfs exploding as Type Ia supernovae (SNIa). Previous studies of carbon-oxygen detonation structure and stability at low densities were performed under the assumption that the velocity of a detonation wave derives from complete burning of carbon and oxygen to iron. In fact, at densities <10^6 g/cm3 the detonation in SNIa may release less than a half of the available nuclear energy. In this paper we study basic properties of such detonations. We find that the length of an unsupported steady-state C-detonation is 30-100 times greater than previously estimated, and that the decreased energy has a drastic effect on the detonation stability. In contrast to complete detonations which are one-dimensionally stable, C-detonations may be one-dimensionally unstable and propagate by periodically re-igniting themselves via spontaneous burning. The re-ignition period at rho < 10^6 g/cm3 is estimated to be greater than the time-scale of a SNIa explosion. This suggests that propagation and quenching of C-detonations at these densities could be affected by the instability. Potential observational implications of this effect are discussed." @default.
- W3100406078 created "2020-11-23" @default.
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- W3100406078 date "2011-03-07" @default.
- W3100406078 modified "2023-09-26" @default.
- W3100406078 title "INCOMPLETE CARBON-OXYGEN DETONATION IN TYPE Ia SUPERNOVAE" @default.
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- W3100406078 doi "https://doi.org/10.1088/0004-637x/730/2/87" @default.
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